Ratiometric near infrared fluorescence imaging of dopamine with 1D and 2D nanomaterials.

Neurotransmitters are released by neuronal cells to exchange information. Resolving their spatiotemporal patterns is crucial to understand chemical neurotransmission. Here, we present a ratiometric sensor for the neurotransmitter dopamine that combines Egyptian blue (CaCuSiO) nanosheets (EB-NS) and single-walled carbon nanotubes (SWCNTs).